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Cognex DS1300 Reference

Displacement sensors
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DS1000 Series
Displacement Sensors
Reference
2019 October 21
Revision: 9.5.0.SR2.1

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Summary of Contents for Cognex DS1300

  • Page 1 DS1000 Series Displacement Sensors Reference 2019 October 21 Revision: 9.5.0.SR2.1...

  • Page 2: Legal Notices

    Copyright © 2016. Cognex Corporation. All Rights Reserved. Portions of the hardware and software provided by Cognex may be covered by one or more U.S. and foreign patents, as well as pending U.S. and foreign patents listed on the Cognex web site at: cognex.com/patents.
  • Page 3 Preface Preface This document describes the Cognex Displacement DS1000 series sensors. Symbols The following symbols indicate safety precautions and supplemental information: WARNING: This symbol indicates a hazard that could cause death, serious personal injury or electrical shock. CAUTION: This symbol indicates a hazard that could result in property damage.

  • Page 4: Cognex 3D Displacement Sensors

    Cognex 3D Displacement Sensors Cognex 3D Displacement Sensors Cognex 3D displacement sensors combine GigE Vision and laser-stripe illumination to generate information about three-dimensional objects that cannot easily be generated by cameras that acquire two-dimensional images. Each sensor projects a triangular laser plane onto an object as it passes within view.
  • Page 5 2D image containing height profile information in real-world coordinates. Your Cognex software supports a variety of 3D vision tools for performing tasks such as:  Generating information about a planar surface...
  • Page 6 Cognex 3D Displacement Sensors Precautions To reduce the risk of injury or equipment damage, observe the following precautions when you install the Cognex product: Route cables and wires away from high-current wiring or high-voltage power sources to reduce the risk of damage or malfunction from the following causes: over-voltage, line noise, electrostatic discharge (ESD), power surges, or other irregularities in the power supply.
  • Page 7 DS1000 Series Models DS1000 Series Models The following sensors contain a class 2M laser:  Model Class 2M Laser DS1050 (821-0116-5R) √ DS1101 (821-0116-3R) √ DS1300 (821-0116-4R) √ Accessories The following optional components can be purchased separately. For a list of options and accessories, contact your Cognex sales representative.
  • Page 8 DS1000 Series Models Length Description Part Number Cable Power and I/O, M12 to DB15, right-angle CBL-05P2-R2 CBL-20P2-R2 Ethernet Cables Length Description Part Number 0.6m M12 to RJ-45, straight CCB-84901-1001-00 CCB-84901-1002-02 CCB-84901-1003-05 CCB-84901-1004-10 CCB-84901-1005-15 CCB-84901-1006-30 Length Description Part Number M12 to RJ-45, right-angle...

  • Page 9: Mounting Hardware

    DS1000 Series Models Mounting Hardware Description Part Number Mounting bracket and M6 screws. DS-BKT-000 Description Part Number High-accuracy mounting plate and M6 screws. DS-MPHA-00 Steel Enclosure Description Part Number IP69K stainless steel enclosure DS-ENC-SS-00...

  • Page 10: Laser Safety Warnings

    DS1300 INSTRUCTIONS MAY CAUSE SERIOUS INJURY Cognex places the following labels on every 3D displacement sensor: DS1000 Series If you need more information on the collection, reuse, and recycling systems, please contact your local or regional waste administration. You may also contact your supplier for more information on the environmental performance of this product.

  • Page 11: Label Locations

    DS1000 Series Models Label Locations...

  • Page 12: Warnings And Notices

    There is no scheduled maintenance necessary to keep the product in compliance. Under no circumstances should you operate the sensor if it is defective or the seal damaged. Cognex Corporation cannot be held responsible for any harm caused by operating a faulty unit.
  • Page 13 DS1000 Series Models Dimensions...

  • Page 14: Hardware Specifications

    Temperature Maximum 10% to 85%, non-condensing (Operating and Storage) Humidity Environmental IP65 (with Cognex recommended IP65 Ethernet and Power and I/O cables) Voltage: +24 VDC +/- 10% Power Supply Current: 500 mA max Requirements Input voltage limits: Trig+ - Trig - = - 24VDC to +24VDC Trigger Input ON: >...
  • Page 15 DS1050 Sensor Specifications This value depends on Encoder Resolution, the Distance per Cycle and the Steps per Line Y Resolution settings. 0.005 mm Z Resolution Bottom 0.014 mm...
  • Page 16 -10 ºC to 80 ºC (14 ºF to 176 ºF) Maximum Humidity 10% to 85%, non-condensing (Operating and Storage) Environmental IP65 (with Cognex recommended IP65 Ethernet and Power and I/O cables) Voltage: +24 VDC +/- 10% Power Supply Requirements Current: 500 mA max...
  • Page 17 -10 ºC to 80 ºC (14 ºF to 176 ºF) Maximum Humidity 10% to 85%, non-condensing (Operating and Storage) Environmental IP65 (with Cognex recommended IP65 Ethernet and Power and I/O cables) Voltage: +24 VDC +/- 10% Power Supply Requirements Current: 500 mA max...

  • Page 18: System Layout

    24V DC power + I/O + Encoder connector M6 mounting boss M4 through-body mounting holes Safe Handling Retain the original packaging supplied by Cognex and re-use it whenever you ship your sensor. Follow the instructions in Sensor Maintenance on page 20 for details on cleaning the sensor.

  • Page 19: System Leds

    System Layout System LEDs Connector Indicator Description Blinks when there is Ethernet activity on the link, or is off to indicate Ethernet Link there is no link with the host. Blinks in groups of three when a 1000 Mbps connection is Ethernet Link Status established with the host.

  • Page 20: Sensor Maintenance

    Product Service Bring any performance issues to the attention of your Cognex sales representative. The sensor can only be serviced by a trained Cognex representative. Return the unit to Cognex for any service or repairs. Do not operate the sensor if the enclosure appears damaged.

  • Page 21: Mounting The Sensor

    Mounting the Sensor Mounting the Sensor Firmly mount the sensor so that the laser is perpendicular to the motion of travel. The accuracy and reliability of your 3D images relies on the three-dimensional coordinate system defined by the position of the sensor and the movement of objects that pass within its view.
  • Page 22 Mounting the Sensor Recommended: Attach the sensor to the DS1000 series high-accuracy mounting plate. See the topic High- Accuracy Mounting on page 22 for more information. Use the mounting bosses on the top of the device. See the topic Top Mounting on page 25 for more information.
  • Page 23 Mounting the Sensor The mounting plate supports the corresponding holes: Feature Description Hole for Location Pin Through-hole for M6 screw Hole for Master Pin To mount the sensor to the plate:  1. Align the Master Pin, the Location Pin and the through-hole for the M6 screw with the holes in the mounting plate.
  • Page 24 Mounting the Sensor 2. Confirm the three plane pins make contact with the mounting plate. 3. Insert and tighten the M6 screw. CAUTION: Observe torque limit: 2.2 Nm (19 Lb-In). 4. Mount the plate perpendicular to the direction of moment of the objects to be inspected.
  • Page 25 To mount your sensor using the through-body mounting option, insert rods or appropriate hardware through the sensor unit and use a clamping mechanism to prevent the sensor from shifting during operation. Note: For mounting multiple sensors with a coplanar view, Cognex recommends using mounting plates (part number DS-MPHA-00) for the highest accuracy.
  • Page 26 Cognex software determines how those lines are used. Tip: Cognex recommends unused encoder connections be tied to ground. If encoder signal inputs are left unconnected and your Cognex software is configured to use an encoder, the behavior of the encoder counter is undetermined.
  • Page 27 DB15 Connector DB15 Connector The DB15 port provides power and trigger connections to the sensor through the I/O cable. Pin Number Signal Name +24VDC power Laser- (Not Used) Laser+ (Not Used) Ctrl+ (Not Used) Ctrl- (Not Used) Not Used Not Used -24VDC Encoder A+ Encoder A-...

  • Page 28: Ethernet Connector

    Ethernet Connector Ethernet Connector The Ethernet connection uses an M12-8 female connector. Ethernet Signal RJ-45 Pin Number M12-8 Pin Number...

  • Page 29: Image Acquisition

    Your Cognex vision software captures image information and generates a synthetic image containing height profile information of each object that passes within view of the laser and camera contained within the DS1000 series sensor, as shown in the following example using a 3D display utility: Image acquisition combines the use of the following: ...
  • Page 30 This distance can be calculated based on the dimensions of your encoder and the length of the image you want to acquire. As you configure your Cognex vision software, you determine how encoder cycles affect image acquisition. See the topic Encoder Resolution and Steps Per Line on page 32 for more information or refer to your Cognex software documentation.

  • Page 31: Acquisition Trigger

    Image Acquisition Acquisition Trigger The acquisition trigger input to the sensor is opto-isolated, and the sensor will respond to a trigger event when the voltage difference between the Trig+ and Trig- inputs exceeds 10V. Trigger Circuit 24V max across the input pins - Transition approx. 10V (Min.) To configure the acquisition trigger as a sourcing input, connect the Trig+ terminal to the high-voltage reference (24 VDC) and the Trig- terminal to the output of the photo-electric sensor.
  • Page 32 Your Cognex software allows you to increase the number of steps within a single cycle. Basing a step on the rising and falling edge of a pulse from one channel effectively doubles the number of steps per cycle, while basing it after each rising and falling edge of both channels will quadruple the number of steps per cycle.
  • Page 33 Image Acquisition If you specify a value that is too high, the sensor does not acquire enough image information and the resulting image will appear flattened:  Cognex recommends you experiment with this value for the best results.
  • Page 34 Image Acquisition Acquisition Wizard Your Cognex software provides the Displacement Sensor Acquisition Wizard to assist you in configuring the necessary acquisition parameters for your 3D displacement sensor. The following figure shows one part of the wizard: See your Cognex software documentation for details.
  • Page 35 Working Section Working Section The working section is the subset of the overall laser plane visible to the camera field of view. Area Description Camera field of view Laser Working Section...
  • Page 36 Working Section Each DS1000 series sensor supports a different field of view and working section. Model Numbers Specification DS1050 DS1101 DS1300 Clearance Distance (mm) Near Field of View (mm) Far Field of View (mm) Measurement Range (mm)
  • Page 37 Range Images Range Images Note: Only DS1000 series sensors acquire range images capable of being analyzed by Cognex 3D vision tools. Some of the content in this section may not apply to the profile images acquired by the DL1000 series sensors.
  • Page 38 The following figure illustrates the laser stripe as seen from the position of the camera and the intensity image the camera captures:  The sensor locates the brightest pixels in the intensity image in order to extract peak information. Your Cognex software combines successive intensity images to generate a synthetic image containing height profile information.

  • Page 39: Profile Window

    Profile Window Your Cognex software allows you to define a profile window to limit the working section to a specific zone. For example, the following figure shows one working section with no profile window and another with a profile window to limit where...
  • Page 40 The following figure shows the range image on 2D display with the missing pixels in red:  Missing pixels lack valid values on height profile information for your object, but your Cognex software provides a Missing Pixel operator to replace missing pixels by estimated or interpolated values.
  • Page 41 Range Image Range Image with Color Map The values used by a color map are for display purposes and do not change the range image data. See your Cognex software documentation for details.
  • Page 42 Range Images Calibration In order to generate a range image which closely represents the physical contours of an object, the sensor must transform raw peak data into real-world coordinates as well as remove the distortion from the camera lens. In addition, the sensor my compensate for perspective distortion, which is illustrated in the following figure: ...
  • Page 43 3D Viewer Your Cognex software provides a 3D Range Image Viewer to view range images in a three-dimensional setting. The utility allows you to rotate your view of the image around three-dimensional space. See your Cognex software documentation for more information.

  • Page 44: Coordinate Systems

    Coordinate Systems Coordinate Systems Your Cognex vision software defines two coordinate systems in connection with displacement sensors: Coordinate System Description Physically accurate / right-handed 3D coordinate system rigidly affixed Sensor 3D Space to the sensor. Units: mm Left-handed, the origin is at the upper-left corner of first pixel in image.
  • Page 45 Coordinate Systems Image 3D Space Each range image uses a coordinate system defined in Image 3D Space, with units defined in pixel values. The Z-axis contains height information: ...

  • Page 46: Motion Direction

    Sensor 3D Space. Transformation from Image 3D to Sensor 3D Space Your Cognex vision software performs the mapping between coordinate spaces. Motion Direction The motion direction of your conveyor system changes the origin of the Sensor 3D coordinate system. For example, the following figure shows the origin of both coordinate systems when the direction of motion is lens to laser: ...
  • Page 47 Coordinate Systems When the direction of motion is laser to lens, the Y-axis points in the opposite direction: Laser to Lens Direction...
  • Page 48 Be aware that as the same object arrives from opposite directions, the first acquired pixels are made from the other end of the object. As your Cognex software stitches them together in the order of arrival and builds up the image, the result is that the object from one of the two directions looks mirrored.

  • Page 49: Compliance Statements

    Note: For the most current CE declaration and regulatory conformity information, see the Cognex support site: cognex.com/support. DS1000 series sensors meet or exceed the requirements of all applicable standards organizations for safe operation. As with any electrical equipment, however, the best way to ensure safe operation is to operate them according to the agency guidelines that follow.
  • Page 50 Compliance Statements Laser Safety Statement - DS1050 Compliance with FDA performance standards for laser products except for deviations pursuant to Laser Notice No. 50, dated June 24, 2007. This device has been tested in accordance with IEC60825-1 2nd ed., and has been certified to be under the limits of a Class 2M Laser device.
  • Page 51 Compliance Statements CAN/CSA-C22.2 No. 61010-1-04 Part 1, UL STD. No. 61010-1, 2nd Edition. Laser Safety Statement - DS1300 Compliance with FDA performance standards for laser products except for deviations pursuant to Laser Notice No. 50, dated June 24, 2007. This device has been tested in accordance with IEC60825-1 2nd ed., and has been certified to be under the limits of a Class 2M Laser device.
  • Page 52 January 2018...

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